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International Journal of Cell Cloning, Vol 5, 134-141, Copyright © 1987 by AlphaMed Press

ORIGINAL ARTICLES

Characteristics of murine yolk sac erythroid progenitors and their population expansion in liquid culture

A Kanamaru, H Nakayama, K Okuda, K Matsuda, Y Kitamura and K Nagai

Remarkable differences were found between late erythroid progenitors (CFU-e) in cultures of murine yolk sac cells and those of fetal liver cells with respect to frequency, erythropoietin responsiveness and colony size. Cultures of yolk sac on day 11 of gestation showed a CFU-e population of lower frequency, less sensitivity to erythropoietin and smaller colony size than those from cultures of day 14 fetal liver cells. As the proportion of CFU-e to BFU-e was much lower in yolk sac than that in fetal liver, 48-96 h liquid culture experiments were done with these cells to examine the capacity of their precursors to generate a certain amount of CFU-e subpopulations. The cultures of yolk sac cells produced large numbers of CFU-e which formed some large-sized colonies but those of fetal liver cells generated only a small amount of CFU-e.




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Copyright © 1987 by AlphaMed Press.